9521 P-L. Discovered 1960 Oct. 17 by C. J. van Houten and I. van Houten-Groeneveld at Palomar.

Named in honor of Takeshi (Ken) Sato, a devoted educator who is currently director of the planetarium at Hiroshima's Children's Museum. He is an amateur planetary observer who served as director of the JupiterSaturn Section of the Oriental Astronomical Association during 1960-1971. He initiated the ordinance to minimize light pollution in the town of Bisei, Okayama Prefecture. Enacted in 1989, this ordinance was the first of its kind in Japan. (M 29147)

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